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(N0 Mbdel.) 5 Sheets-She et I. R. SCHULZ. FEED WATER APPARATUS,

Patented. Apr. 16, 1895 WITNESSES:

mvnvron (No Model.) A 5 Sheets-Sheet 2. R. SGHULZ.

FEED WATER APPARATUS.

No. 537,724. Patented Apr. 16, 1895.

fi 31s 1V mun T WITNESSES 3 .5 e e h S m e e h S 5 S U T M A LP U M R 0E ST .A W D E E F m d 0 M 0 w Patented Apr. 16; 1895.

,INVENTOR W (I I WITNESSES (No Model.) 5 Sheets-$heetv 4.

R. SOHULZ. FEED WATER APPARATUS. No. 537,724. Patented Apr.16, 1895.

. WITNESSES Z w A! fl 'W 5 Sheets' -Sheet 5.

No Model.)

B. SGHULZ. FEED WATER APPARATUS.

INVENTDR W Patented Apr. 16, 18795.

I W W WITNESSES STATEs PATENT Orrrca.

RICHARD SCHULZ, OF BERLIN, GERMANY.

FEED-WATER APPARATUS.

SPECIFICATION forming part of Letters Patent No. 537,724, dated April16,1895.

Application filed February 21, 1893. Serial No. 463,189. (No model.)Patented in Germany July 10, 1891,110. 62,579, and in England December29, 1891, No. 22,681.

To all whom it may concern:

Be it known that I, RICHARD SOHULZ, a subject of the King of Prussia,residing at 28 Schlegelstrasse, Berlin, Germany, have invented certainnew and useful Improvements in Feed-Water Apparatus, (for which I haveobtained Letters Patent in Germany, No. 62,579,dated July 10,1891,and inGreat Britain, No. 22,681, dated December 29, 1891,) of which thefollowing is a specification.

The water supplied from the surface condensers and employed for feedingthe boiler, contains, besides air, the oil removed by the steam duringthe lubrication, and. also other impurities, and must further be warmedprevioustoitsbeingemployed. Apparatushitherto invented for this purposeconsists of special reservoirs for freeing the water from air, andfurther of filters and preliminary warming apparatus. Such apparatustakes up much room because of its being in separate parts, which is verydisadvantageous for machinery, especially for sea steam engines, as itfrequently hinders the introduction of such apparatus.

By this invention the feed water tank is simultaneously employed for theheating, purification and air separation of the condensed water. It isfor this purpose provided with an apparatus for warming and with afilter in such a way that the condensed water is warmed before beingfiltered, while the oil carried along with it may be so collected thatit does not need to pass through the filter, but may be run off byitself. The separationof the air and oil is assisted by the heating,while the peculiar arrangement of the filter obviates any choking of thesame by the oil. In order to prevent any interruption in the working ofthe filter, the device is so arranged, that the filtration takes placeunder a certain pressure of liquid, the degree of which may beascertained by means of water gage glasses, and affords a guarantee forthe good working of the filter.

Various modifications of an apparatus in accordance with my inventionare shownon the accompanying drawings, in which- Figure 1 shows a frontview of one pattern of the apparatus; Fig. 2, a horizontal section ona-b and c-cl of Fig. 1. Fig. 3 is a verti cal section on e--f of Fig. 2;and Fig. 4c is a side view. Figs. 3, 8 3",. 3 are sectional views ofmodifications. line eof Fig. 6; and Fig. 6 is a plan of a modified formof apparatus. Fig. 7 is a section on line e--f of Fig.8; and Fig. 8 is aplan partly in section of another modification. Fig. 9 is plan View ofanother form of the apparatus. Fig. 10 is a vertical section on. theline e- Fig. 11, a similar oneon g-h; Fig. 12, an elevation of a portionof the apparatus. Fig. 13 is a diagrammatic view of another form. Fig.14. is a sectional view of another modification.

The apparatus shown in Figs. 1 to 8 is divided into two equal parts, oneof which [may be shut off separately when a cleansing or renewal of thefilter is necessary. The work ing of the other division is not therebyinterrupted. A vertical partition I, Fig. 2, divides the tank into theabove named two compart ments into which condensed water may be conveyedby means of a valve A, Fig. 3, suitably arranged for each compartment.This condensed water passes in the direction of the arrow, Fig. 3, bymeans of a plate Gr, which is in the shape of a funnel, into the middleportion of the tank and. flows between the tubing of a heating coil B(which has a steam supply pipe 13'). The water then passes into thespace T above the body of the filter 0 through which latter it filtersfrom top to bottom. The space beneath the filter O is connected with avertical pipe I), Fig. 3, which forms a reservoir for purified andwarmed feed water. The feed water is conveyed from any compartment ofthe apparatus to the boiler supply pump by means of an exit pipe Ehaving avalve F. The upper orifice of the pipe E is arranged at such aheight, that the lowest water level W outside the reservoir tube D issufiiciently high above the filter O that the oil or fat brought by thewater may be separated from off the surface of the same in the space Toutside the reservoir tube D. The separation of this oil or fat is aidedby the water being heated by means of the heating coil B. The separationof the air is similarly aided and the liberated air may escape through apipe .0: at the top of the tank. The separated oil swims on the water inthe chamber T and by means Fig. 5 is a section on Q of a glass window J,Fig. 4, it can be seen when it is necessary to let off some of the oil,which may be done by means of a cock K. The filtration through the part0 takes place only after the removal of the oil. By means of thefiltration, the water is freed from the various impurities. The waterthus purified rises to the top of the reservoir tube D and passes intothe exit pipe E. The air which is still free in this pipe may escape tothe outside through a pipe y. If the feed pump be not working, the upperpart S of the reservoir tube D serves to contain the purified water. Awater gage glass M is attached to the tankTabove the filter, andanotherN from the space under the filter. These two water gage glassesallow the level of the liquid in the tank T to be compared at any timewith the level of the liquid in the reservoir pipe D or S. Inconsequence of the resistance existing in the filter C while theapparatus is at work, the liquid in the tank T will always standsomewhat hi gher,approximatel y at W ,than in the tube D. Thisdifference increases with the length of time the apparatus has been inuse and as the filter becomes more foul. If W be the level of the liquidin the reservoir S, the diiference between that and the height W willgive a basis for ascertaining the resistance of the filter. If thisdifference exceed a certain degree it is a sign that the apparatus mustbe cleaned and the filter O changed, which may conveniently be doneafter closing the valves A and F leading to the compartment in questionand emptying the same by means of a run off cook a and by removing lidsL at their sides.

Both the tank T and reservoir tube S of the apparatus allow of theliquid rising to W and W if the feed pump should be arrested andcondensed water be continued to be supplied.

The pipes E and D may also be arranged outside of the apparatus as shownin Fig. 3 and one or both of them may be made cellular. The apparatus asshown in Figs. 5 and 6, for instance, may be provided with a specialcollecting chamber S beneath the bottom of the ordinary tank T. If thelevel W of the liq, uid in this special chamber S remain below the lidof the same, the distance of the surface W of the liquid in the ordinarytank T from a fixed mark Z made on the gage glass M at the level W ofthe upper edge of the exit tube E affords a basis for ascertaining theresistance of the filter. In this case, the in flow pipe A is arrangedat the side.

In the apparatus shown in Figs. 7 and 8, the exit pipe E and reservoir Sare replaced by a vessel S arranged adjacent to the tank T, while thereservoir tube D runs sidewise from the. tank T and simply projects intothe vessel S The purified liquid flows in this case therefore from theupper orifice of the reservoir tube D. In this case also the differencebetween the level W of the liquid and the mark Z of the gage glass Mshows the resistance of the filter, so long as the lower level W remainsbelow the upper edge of the res ervoir tube D.

The tubes B for warming the water may naturally be arranged in differentways to the one shown on the drawing. For instance, a group of straighttubes or the like may be made use of.

In another form of the apparatus, shown in Figs. 9 to 12, sixcompartments T are arranged round a common collecting chamber S Thereservoir tubes D, belonging to the compartments T, Fig. 7, are replacedby narrow cham" bers D which are connected with the space underneath thefilter O by means of apertures 0 and with the collecting chamber S bymeans of further apertures which may be formed by a valve R which may beadjusted so as to regulate the lowest level of the liquid in therespectivecompartment. Asimilararrangement may also be provided for thepipes D, Fig. 7, and E, Figs. 1 to 6. The upper end of the pipe E, Figs.1 to 6, may, forinstance, as shown in Fig. 3*, be made movable andadjustable by means of a sleeve E or provided with a slot, intersectionor side orifice, which may be closed by means of an adjustable valve Eas shown in Fig. 3. In this manner the extremelevel W of the surface ofthe liquid may be regulated, at which the purified water runs out, andtherewith the zone where the oil and fat are separated out, or such maybe altered while the apparatus is at work. In this latter form ofapparatus also, a mark Z on the gage glass shows the height of the uppersurface of the aperture Q aforesaid. These marks, when a valve R isemployed for the apertures in connection with the collecting chamber,must be adjusted to correspond withthe adjustment of such valve R, whichmay be done by means of a suitable mechanism, such, for instance, as themoving up and down of marks Z.by means of a screw spindle s, the nut ofwhich is actuated by the same axles as the spindle s of the valve R, asshown in Fig. 3.

Two cocks K K, Fig. 12 may be arranged on the outer wall of the tanks atdifferent heights corresponding to the alteration of the level W of thewater, for the purpose of running off the grease. By so connectingseveral vessels for removing the grease and filtering the water with acommon reservoir for the purified water, the apparatus is considerablysimplified when such is a consideration as in the case of speciallylarge machinery. The compartments T may, of course, also be arranged ina row side by side as shown for instance in Fig. 13.

For small apparatus which is not driven continuously, and in whichconsequently the filter may be changed during the intervals of working,an apparatus with a single chamber T will naturally suffice. In allcases the water in the apparatus traverses during its cleansing aU-shaped course as shown in Fig. 14, for instance. The heating apparatusB is placed in one bend T above the filter O and the separation of theoil takes place above IIO this latter. The second bend D consists inFigs. 1 to 8 of a tube, but in Figs. 9 to 14 of a vessel D acting as areservoir. From this figure it maybe seen that without essentiallyaltering the object of the apparatus, the filter C may also be arrangedin the overflow of the chamber T to the tube D as shown in dotted linesat C or even in the lower part of the reservoir tube D or of the part Das shown at 0 Fig. 14:. p

I claim as my invention- 1. The improvements in feed waterapparatushaving a U -shapedcourse for the water consisting in a tankprovided with a filtering medium near the lowest part thereof, an inletpassage to the space above the filtering medium, an outlet passageleading from beneath tion of a tank provided with a filter at its lowerpart and a heating medium in the space above the filter with an inletpassage to the space above the filter, and an outlet passage leadingfrom beneath the filter, the height of the end oflthe outlet passagebeing adjustable, substantially as and for the purposes set forth.

3. In an apparatus for purifying feed water and freeing the same fromair, the combination of a tank provided with a filtering medium at itslower part, a heating medium in the space above the filter with an inletpassage to the space above the filter, and an outlet passage leadingfrom beneath the filter, and extending upwardly, and indicating means toshow the difierence in the level of the water in the space above thefilter, and that of the water in the outlet passage to ascertain theresistance of the said filtering medium, substantially as and forthepurposes set forth.

RICHARD SOHULZ.

Witnesses:

RICHARD SCHMIDT, LOUIS RICHTER.

